Allow to add arguments on nginx-proxy docker run

docs/docs.md

@@ -677,6 +677,10 @@ module.exports = {
       env: {
         DEFAULT_HOST: 'foo.bar.com'
       },
+      // additional docker arguments (e.g.: additional ports)
+      dockerArgs: [
+        '-p 8080:8080'
+      ],
       // env for the jrcs/letsencrypt-nginx-proxy-companion container
       envLetsEncrypt: {
         // Directory URI for the CA ACME API endpoint

src/plugins/proxy/assets/templates/docker-args.sh

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+<% if (typeof dockerArgs === "object") { %> \
+  echo <% for (var args in dockerArgs) { %> <%- dockerArgs[args] %> <% } %>
+<% } %>

src/plugins/proxy/assets/templates/start.sh

@@ -64,6 +64,7 @@ sudo docker run \
   -v /opt/$APPNAME/config/html:/usr/share/nginx/html \
   -v /opt/$APPNAME/config/nginx-default.conf:/etc/nginx/conf.d/my_proxy.conf:ro \
   -v /var/run/docker.sock:/tmp/docker.sock:ro \
+  $APP_PATH/config/docker-args.sh \
   jwilder/nginx-proxy
 echo "Ran nginx-proxy as $APPNAME"
 

src/plugins/proxy/command-handlers.js

@@ -201,6 +201,16 @@ export function reconfigShared(api) {
     dest: `/opt/${PROXY_CONTAINER_NAME}/config/nginx-default.conf`
   });
 
+  const sharedDockerArgs = shared.dockerArgs || [];
+
+  list.copy('Sending docker args', {
+    src: api.resolvePath(__dirname, 'assets/templates/docker-args.sh'),
+    dest: `/opt/${PROXY_CONTAINER_NAME}/config/docker-args.sh`,
+    vars: {
+      dockerArgs: sharedDockerArgs
+    }
+  });
+
   const sessions = getSessions(api);
 
   return api.runTaskList(list, sessions, {

src/plugins/proxy/validate.js

@@ -22,6 +22,7 @@ const schema = joi.object().keys({
     httpPort: joi.number(),
     httpsPort: joi.number(),
     nginxConfig: joi.string(),
+    dockerArgs: joi.array().items(joi.string()),
     env: joi
       .object()
       .pattern(/[\s\S]*/, [joi.string(), joi.number(), joi.boolean()]),